CVE-2019-12966 Code injection in n/a
FeHelper browser extension allows arbitrary code execution via malicious JSON input during formatting operations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-12966?
CVE-2019-12966 is a critical code injection vulnerability in n/a, published on 26 Jun 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as demonstrated by the {"a":(function(){confirm(1)})()} input.
Weakness: CWE-74
Which versions are affected by CVE-2019-12966?
It affects 1 product.
Products include Fehelper Project Fehelper.
How do I fix CVE-2019-12966?
No fix has been published for CVE-2019-12966 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2019-12966 being exploited?
There is no known exploitation of CVE-2019-12966 in the wild and no public exploit code.
Sources
Also known as GHSA-jpr5-9g6v-vc48.